Thread: i dont believe in chem trails but why so many planes fly over the cities
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Old 08-04-2012, 05:25 PM
Pudfark Pudfark is offline
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Location: Republic of Texas
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Lead is an abrasive. New car engines wear less than old "leaded" ones.

Proof?
Conventional aircraft engines burn 100 octane leaded gas. Their TBO after, 60 years is the same. Why? They burn the same leaded abrasive fuel.

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